In this C2GTalk, host Mark Turner talks speaks with Federal University of Rio de Janeiro's Dr. Roberto Schaeffer about carbon dioxide removal and solar radiation modification in the context of the IPCC pathways, with the goal of achieving the Paris Agreement. Dr. Roberto Schaeffer is a full professor of energy economics at the Energy Planning Programme, Federal University of Rio de Janeiro, Brazil, with some 150 master's and doctoral theses supervised so far. Schaeffer holds a Ph.D. in energy management and policy from the University of Pennsylvania, where he also worked as a visiting professor and lecturer on different occasions. Schaeffer has collaborated with the Intergovernmental Panel on Climate Change (IPCC) since 1998, with the United Nations Environmental Program (UNEP) as a lead author of different UNEP Gap Reports since 2013, and as a lead author of different UNEP Production Gap Reports since 2019. For more, please go to C2G.net.